388a6d5416
Streaming of VGA stv0680 based cams (instead of CIF ones) failed, because we were using the wrong control pipe for certain commands, this patch fixes this. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
374 lines
10 KiB
C
374 lines
10 KiB
C
/*
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* STV0680 USB Camera Driver
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*
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* Copyright (C) 2009 Hans de Goede <hdgoede@redhat.com>
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*
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* This module is adapted from the in kernel v4l1 stv680 driver:
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*
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* STV0680 USB Camera Driver, by Kevin Sisson (kjsisson@bellsouth.net)
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*
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* Thanks to STMicroelectronics for information on the usb commands, and
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* to Steve Miller at STM for his help and encouragement while I was
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* writing this driver.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#define MODULE_NAME "stv0680"
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#include "gspca.h"
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MODULE_AUTHOR("Hans de Goede <hdgoede@redhat.com>");
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MODULE_DESCRIPTION("STV0680 USB Camera Driver");
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MODULE_LICENSE("GPL");
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/* specific webcam descriptor */
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struct sd {
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struct gspca_dev gspca_dev; /* !! must be the first item */
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struct v4l2_pix_format mode;
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u8 orig_mode;
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u8 video_mode;
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u8 current_mode;
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};
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/* V4L2 controls supported by the driver */
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static const struct ctrl sd_ctrls[] = {
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};
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static int stv_sndctrl(struct gspca_dev *gspca_dev, int set, u8 req, u16 val,
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int size)
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{
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int ret = -1;
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u8 req_type = 0;
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unsigned int pipe = 0;
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switch (set) {
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case 0: /* 0xc1 */
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req_type = USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT;
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pipe = usb_rcvctrlpipe(gspca_dev->dev, 0);
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break;
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case 1: /* 0x41 */
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req_type = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT;
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pipe = usb_sndctrlpipe(gspca_dev->dev, 0);
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break;
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case 2: /* 0x80 */
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req_type = USB_DIR_IN | USB_RECIP_DEVICE;
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pipe = usb_rcvctrlpipe(gspca_dev->dev, 0);
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break;
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case 3: /* 0x40 */
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req_type = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
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pipe = usb_sndctrlpipe(gspca_dev->dev, 0);
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break;
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}
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ret = usb_control_msg(gspca_dev->dev, pipe,
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req, req_type,
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val, 0, gspca_dev->usb_buf, size, 500);
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if ((ret < 0) && (req != 0x0a))
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PDEBUG(D_ERR,
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"usb_control_msg error %i, request = 0x%x, error = %i",
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set, req, ret);
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return ret;
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}
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static int stv0680_handle_error(struct gspca_dev *gspca_dev, int ret)
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{
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stv_sndctrl(gspca_dev, 0, 0x80, 0, 0x02); /* Get Last Error */
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PDEBUG(D_ERR, "last error: %i, command = 0x%x",
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gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
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return ret;
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}
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static int stv0680_get_video_mode(struct gspca_dev *gspca_dev)
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{
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/* Note not sure if this init of usb_buf is really necessary */
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memset(gspca_dev->usb_buf, 0, 8);
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gspca_dev->usb_buf[0] = 0x0f;
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if (stv_sndctrl(gspca_dev, 0, 0x87, 0, 0x08) != 0x08) {
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PDEBUG(D_ERR, "Get_Camera_Mode failed");
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return stv0680_handle_error(gspca_dev, -EIO);
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}
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return gspca_dev->usb_buf[0]; /* 01 = VGA, 03 = QVGA, 00 = CIF */
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}
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static int stv0680_set_video_mode(struct gspca_dev *gspca_dev, u8 mode)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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if (sd->current_mode == mode)
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return 0;
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memset(gspca_dev->usb_buf, 0, 8);
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gspca_dev->usb_buf[0] = mode;
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if (stv_sndctrl(gspca_dev, 3, 0x07, 0x0100, 0x08) != 0x08) {
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PDEBUG(D_ERR, "Set_Camera_Mode failed");
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return stv0680_handle_error(gspca_dev, -EIO);
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}
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/* Verify we got what we've asked for */
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if (stv0680_get_video_mode(gspca_dev) != mode) {
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PDEBUG(D_ERR, "Error setting camera video mode!");
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return -EIO;
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}
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sd->current_mode = mode;
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return 0;
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}
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/* this function is called at probe time */
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static int sd_config(struct gspca_dev *gspca_dev,
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const struct usb_device_id *id)
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{
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int ret;
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struct sd *sd = (struct sd *) gspca_dev;
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struct cam *cam = &gspca_dev->cam;
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/* Give the camera some time to settle, otherwise initalization will
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fail on hotplug, and yes it really needs a full second. */
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msleep(1000);
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/* ping camera to be sure STV0680 is present */
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if (stv_sndctrl(gspca_dev, 0, 0x88, 0x5678, 0x02) != 0x02 ||
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gspca_dev->usb_buf[0] != 0x56 || gspca_dev->usb_buf[1] != 0x78) {
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PDEBUG(D_ERR, "STV(e): camera ping failed!!");
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return stv0680_handle_error(gspca_dev, -ENODEV);
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}
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/* get camera descriptor */
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if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0200, 0x09) != 0x09)
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return stv0680_handle_error(gspca_dev, -ENODEV);
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if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0200, 0x22) != 0x22 ||
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gspca_dev->usb_buf[7] != 0xa0 || gspca_dev->usb_buf[8] != 0x23) {
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PDEBUG(D_ERR, "Could not get descriptor 0200.");
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return stv0680_handle_error(gspca_dev, -ENODEV);
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}
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if (stv_sndctrl(gspca_dev, 0, 0x8a, 0, 0x02) != 0x02)
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return stv0680_handle_error(gspca_dev, -ENODEV);
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if (stv_sndctrl(gspca_dev, 0, 0x8b, 0, 0x24) != 0x24)
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return stv0680_handle_error(gspca_dev, -ENODEV);
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if (stv_sndctrl(gspca_dev, 0, 0x85, 0, 0x10) != 0x10)
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return stv0680_handle_error(gspca_dev, -ENODEV);
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if (!(gspca_dev->usb_buf[7] & 0x09)) {
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PDEBUG(D_ERR, "Camera supports neither CIF nor QVGA mode");
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return -ENODEV;
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}
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if (gspca_dev->usb_buf[7] & 0x01)
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PDEBUG(D_PROBE, "Camera supports CIF mode");
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if (gspca_dev->usb_buf[7] & 0x02)
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PDEBUG(D_PROBE, "Camera supports VGA mode");
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if (gspca_dev->usb_buf[7] & 0x04)
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PDEBUG(D_PROBE, "Camera supports QCIF mode");
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if (gspca_dev->usb_buf[7] & 0x08)
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PDEBUG(D_PROBE, "Camera supports QVGA mode");
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if (gspca_dev->usb_buf[7] & 0x01)
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sd->video_mode = 0x00; /* CIF */
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else
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sd->video_mode = 0x03; /* QVGA */
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/* FW rev, ASIC rev, sensor ID */
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PDEBUG(D_PROBE, "Firmware rev is %i.%i",
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gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
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PDEBUG(D_PROBE, "ASIC rev is %i.%i",
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gspca_dev->usb_buf[2], gspca_dev->usb_buf[3]);
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PDEBUG(D_PROBE, "Sensor ID is %i",
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(gspca_dev->usb_buf[4]*16) + (gspca_dev->usb_buf[5]>>4));
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ret = stv0680_get_video_mode(gspca_dev);
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if (ret < 0)
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return ret;
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sd->current_mode = sd->orig_mode = ret;
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ret = stv0680_set_video_mode(gspca_dev, sd->video_mode);
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if (ret < 0)
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return ret;
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/* Get mode details */
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if (stv_sndctrl(gspca_dev, 0, 0x8f, 0, 0x10) != 0x10)
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return stv0680_handle_error(gspca_dev, -EIO);
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cam->bulk = 1;
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cam->bulk_nurbs = 1; /* The cam cannot handle more */
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cam->bulk_size = (gspca_dev->usb_buf[0] << 24) |
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(gspca_dev->usb_buf[1] << 16) |
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(gspca_dev->usb_buf[2] << 8) |
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(gspca_dev->usb_buf[3]);
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sd->mode.width = (gspca_dev->usb_buf[4] << 8) |
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(gspca_dev->usb_buf[5]); /* 322, 356, 644 */
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sd->mode.height = (gspca_dev->usb_buf[6] << 8) |
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(gspca_dev->usb_buf[7]); /* 242, 292, 484 */
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sd->mode.pixelformat = V4L2_PIX_FMT_STV0680;
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sd->mode.field = V4L2_FIELD_NONE;
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sd->mode.bytesperline = sd->mode.width;
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sd->mode.sizeimage = cam->bulk_size;
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sd->mode.colorspace = V4L2_COLORSPACE_SRGB;
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/* origGain = gspca_dev->usb_buf[12]; */
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cam->cam_mode = &sd->mode;
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cam->nmodes = 1;
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ret = stv0680_set_video_mode(gspca_dev, sd->orig_mode);
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if (ret < 0)
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return ret;
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if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0100, 0x12) != 0x12 ||
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gspca_dev->usb_buf[8] != 0x53 || gspca_dev->usb_buf[9] != 0x05) {
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PDEBUG(D_ERR, "Could not get descriptor 0100.");
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return stv0680_handle_error(gspca_dev, -EIO);
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}
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return 0;
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}
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/* this function is called at probe and resume time */
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static int sd_init(struct gspca_dev *gspca_dev)
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{
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return 0;
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}
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/* -- start the camera -- */
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static int sd_start(struct gspca_dev *gspca_dev)
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{
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int ret;
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struct sd *sd = (struct sd *) gspca_dev;
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ret = stv0680_set_video_mode(gspca_dev, sd->video_mode);
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if (ret < 0)
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return ret;
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if (stv_sndctrl(gspca_dev, 0, 0x85, 0, 0x10) != 0x10)
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return stv0680_handle_error(gspca_dev, -EIO);
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/* Start stream at:
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0x0000 = CIF (352x288)
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0x0100 = VGA (640x480)
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0x0300 = QVGA (320x240) */
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if (stv_sndctrl(gspca_dev, 1, 0x09, sd->video_mode << 8, 0x0) != 0x0)
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return stv0680_handle_error(gspca_dev, -EIO);
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return 0;
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}
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static void sd_stopN(struct gspca_dev *gspca_dev)
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{
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/* This is a high priority command; it stops all lower order cmds */
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if (stv_sndctrl(gspca_dev, 1, 0x04, 0x0000, 0x0) != 0x0)
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stv0680_handle_error(gspca_dev, -EIO);
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}
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static void sd_stop0(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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if (!sd->gspca_dev.present)
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return;
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stv0680_set_video_mode(gspca_dev, sd->orig_mode);
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}
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static void sd_pkt_scan(struct gspca_dev *gspca_dev,
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u8 *data,
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int len)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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/* Every now and then the camera sends a 16 byte packet, no idea
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what it contains, but it is not image data, when this
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happens the frame received before this packet is corrupt,
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so discard it. */
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if (len != sd->mode.sizeimage) {
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gspca_dev->last_packet_type = DISCARD_PACKET;
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return;
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}
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/* Finish the previous frame, we do this upon reception of the next
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packet, even though it is already complete so that the strange 16
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byte packets send after a corrupt frame can discard it. */
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gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
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/* Store the just received frame */
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gspca_frame_add(gspca_dev, FIRST_PACKET, data, len);
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}
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/* sub-driver description */
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static const struct sd_desc sd_desc = {
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.name = MODULE_NAME,
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.ctrls = sd_ctrls,
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.nctrls = ARRAY_SIZE(sd_ctrls),
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.config = sd_config,
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.init = sd_init,
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.start = sd_start,
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.stopN = sd_stopN,
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.stop0 = sd_stop0,
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.pkt_scan = sd_pkt_scan,
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};
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/* -- module initialisation -- */
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static const __devinitdata struct usb_device_id device_table[] = {
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{USB_DEVICE(0x0553, 0x0202)},
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{USB_DEVICE(0x041e, 0x4007)},
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{}
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};
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MODULE_DEVICE_TABLE(usb, device_table);
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/* -- device connect -- */
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static int sd_probe(struct usb_interface *intf,
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const struct usb_device_id *id)
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{
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return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
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THIS_MODULE);
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}
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static struct usb_driver sd_driver = {
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.name = MODULE_NAME,
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.id_table = device_table,
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.probe = sd_probe,
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.disconnect = gspca_disconnect,
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#ifdef CONFIG_PM
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.suspend = gspca_suspend,
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.resume = gspca_resume,
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#endif
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};
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/* -- module insert / remove -- */
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static int __init sd_mod_init(void)
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{
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int ret;
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ret = usb_register(&sd_driver);
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if (ret < 0)
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return ret;
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PDEBUG(D_PROBE, "registered");
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return 0;
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}
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static void __exit sd_mod_exit(void)
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{
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usb_deregister(&sd_driver);
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PDEBUG(D_PROBE, "deregistered");
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}
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module_init(sd_mod_init);
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module_exit(sd_mod_exit);
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